package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

//菜品管理
@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {
    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private DishService dishService;
    @Autowired
    private CategoryService categoryService;

    /**
     * 新增菜品功能
     * @date 2023/2/7 11:47
     * @param dishDto
     * @return R<String>
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());
        dishService.saveWithFlavor(dishDto);
        return R.success("菜品新增成功");
    }

    /**
     * 菜品分页功能
     * @date 2023/2/7 11:50
     * @param page
     * @param pageSize
     * @param name
     * @return R<Page>
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        //构造分页构造器
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        //创建这个是因为菜品的分类名称需要展示出来，而原来的分页只是将菜品的分类ID查出来了
        Page<DishDto> dishDtoPage = new Page<>(page, pageSize);
        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Dish::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);
        //执行分页查询
        dishService.page(pageInfo, queryWrapper);
        //对象拷贝
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");
        //增加records中的菜品分类名称
        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item) ->{
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            Long categoryId = item.getCategoryId();
            Category category = categoryService.getById(categoryId);
            String categoryName = category.getName();
            dishDto.setCategoryName(categoryName);
            return dishDto;
        }).collect(Collectors.toList());
        dishDtoPage.setRecords(list);
        return R.success(dishDtoPage);
    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @date 2023/2/7 16:25
     * @param id
     * @return R<DishDto>
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    /**
     * 修改菜品
     * @date 2023/2/7 16:44
     * @param dishDto
     * @return R<String>
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){
        dishService.updateWithFlavor(dishDto);
        return R.success("修改成功");
    }

    /**
     * 根据分类id获取所属分类的菜品
     * @date 2023/2/7 17:25
     * @param dish
     * @return R<List<Dish>>
     */
//    @GetMapping("/list")
//    public R<List<Dish>> list(Dish dish){
//        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
//        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
//        //只显示起售的菜品
//        queryWrapper.eq(Dish::getStatus, 1);
//        queryWrapper.orderByDesc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
//        List<Dish> list = dishService.list(queryWrapper);
//        return R.success(list);
//    }
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        //只显示起售的菜品
        queryWrapper.eq(Dish::getStatus, 1);
        queryWrapper.orderByDesc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(queryWrapper);
        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            LambdaQueryWrapper<DishFlavor> dishFlavorWrapper = new LambdaQueryWrapper<>();
            dishFlavorWrapper.eq(DishFlavor::getDishId, item.getId());
            List<DishFlavor> dishFlavors = dishFlavorService.list(dishFlavorWrapper);
                dishDto.setFlavors(dishFlavors);
            return dishDto;
        }).collect(Collectors.toList());
        return R.success(dishDtoList);
    }
}
